Lubricator.



PATENTED JAN. 16, 1906.

E. DIB'I'Z.v

LUBRIGATOR.

APPLICATION FILED JUNE 26, 1905.

PATENTED JAN 16, 1906.

2 SHEETS-SHEET 2.

B. DIBTZ. LUBRICATOR.

APPLIUATLON FILED JUNE ze, 1905.

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l/l////////////////l///////////////////////////,7//////////// UNITED sTA'rEs mTEN-T OFFICE.

ERNEST DIETZ, OF BUFFALO, NEW YORK, ASSIGJNOR T() PEARL MANUFAC-v TURING COMPANY, OF BUFFALO, NEW YORK, A CORPORATION OF NEW YORK.

LUBRICATOR.

Specification of Letters' Patent.

Patented Jan. 16, 1906.r

Application led June 26, 1905. Serial No. 266,917.`

This invention relates to lubricators which are adapted to be operated byy a movable part of the machine to which the lubricator is applied, the same having particular relation to devices of this kind comprising a pair of pump-cylinders into one of which oil is drawn or supplied while the contents of the other are being discharged, the two cylinders thus feeding oil altcrl'iately to the part to be lubricated. y

The principal object of my invention is the construction of a continuous and uniform feed-lubricator of this character which requires no manual reversal or resetting from time to time, but is absolutely automatic in action.

Further objects of the invention are to roduce a lubricator of this class which sha be simple and compact in construction and positive and reliable in operation and in which the valve mechanism is easy of access for repairing the same when necessary.

In the accompanying drawings, consisting of two sheets, Figure 1 is a sectional side elevation of the lubricator, the plane of the sectional portion being in line 1 1, Fig. 3. Fig. 2 is a vertical longitudinal section taken centrally through the device. Zontal section in line 3 3, Fig. 2. Fig. 4 is a transverse section in line 4 4, Fig. 3. Fig. 5 is an end View of the eccentric and camsleeve with the main shaft shown in crosssection.

Similar' letters of reference indicate corresponding parts throughout the several views.

A indicates the base of the lubrieator, which is preferably provided with a screwsocket adapted to receive the threaded upper end of a supporting-post A', as shown in Figs, 1 and 2.y Y

B B are a pair of pumpcylinders mounted horizontally upon the raised end portions of the base and arranged in line and so as to face each other. In the preferred construcv tion shown in the drawings the cylinders are Fig. 3 is a horiz outlet chambers J J', respectively, arranged supported by short posts b, cast integral therewith and resting upon the base, to which f latter they are secured by vertical bolts b.

C C are the pistons or plungers of thev pump-cylinders passing through suitable stuffing-boxes in the opposing ends of the cylinders and having their outer ends secured to opposite sides of a yoke D. The lat ter is reciprocated by an eccentric E, turning in the bearing-block D of the yoke and secured to a transverse shaft. F, arranged-midway between the cylinders and supported by standards F F2, risingl from the base A. This shaft is slowly rotated from a movable part of the machine to be lubricated by any suitable means. Preferably the ratchet mechanism shown in the drawings is used for this purpose, the same consisting of aratehetwheel G., secured to the projecting end of the shaft F, and afeed-pawl g, engaging therewith and carried by an oscillating disk or head H. This disk turns upon a comparatively large hub H', secured to the adjacent. standard F2; the disk having a marginal flange h, which overlaps a corresponding flange 71. of the hub, as shown in Fig. 3. The disk is provided with a depending actuating arm or rod H2, adapted to `be connected with the valve-rod of a steam-engine orequivalent art by a rod. (Not shown in the draw-` ings.; I is a suitable detent engaging with the rratchet-wheel G. Y

Each of the cylinders B B is provided with an inlet-port y' and an outlet-port j', which ports .connect the cylinder with inlet and on opposite sides of the cylinder and preferably cast in one piece therewith. The inlet-- chambers of the cylinders are supplied from an oil-reservoir K, surmounting the cylinders and-supported thereon by posts k, having passages le', through which the oil fiows into said chambers, as best shown in Fig. 4. The passage of Lthe oil to and from the cylinders is controlled by valve mechanism of any suitableconstruotion; but the mechanism shown in the drawings is preferably employed for this purpose. The same is constructed as follows: Z Z indicate check-valves arranged in the inlet-chambers J for preventing return of the oil from said chambers and the cylinders into the oil-reservoir. These valves co- .inlet-valves are opened alternately stems and abutting at their front ends against the valve-heads and at their rear ends against removable plugs m, screwed into the rear ends of the cyhnders. These plugs are provided with axial sockets WM, in which the stems of the inlet-valves Z are guided. The b a cam n, secured to the main shaft F an acting upon the valves through thrust-rods n', bearing at their ends a ainst the valves and the faces ofthe cam an passing through suitable stuffing-boxes at the front ends of the inletchambers J The inlet valves and their stems are preferably provided with axial bores which receive the rear ends of said thrustrods, as shown in Fig. 3, so that these rods serve as guides for the valves.

The outlet-chambers J are provided with check-valves o for preventing the oil from returning from the same into the cylinders. These outlet chambers and their checkvalves are identical in construction with 4the inlet-chambers J and valves j, said outletvalves being closed by springs 0 and opened by thrust-rods 02, which are acted on by a cam o3 similar to the cam n. These cams are arranged on diametrically opposite sides of the shaft F, and the relation of the two sets of thrust-rods n o2 to the cams is such that when the inlet-valve of one cylinder iS. open its outlet-valve is closed, and vice versa, YWhile at the same time the valves of the other cylinder are in the reversed position, as shown in Fig. 3, so that in the operation of the lubricator one cylinder is being filled while the other is being emptied. As shown in the last-mentioned fi ure, the valve-operating cam ,n o3 may be ormed integral With the hub or sleeve which carries the pistonoperating-eccentric E.

Each of the voutlet-chambers J has a discharge passage or nipple p, Figs. 3 and 4, to which is connected a delivery-pipe p', leading tothe art to be lubricated. These pipes are provi ed with stop-cocks p2 and connected by a by-pass or pipe p3, i same between their stop-cocks and the outlet-chambers of the lubricator, said connecting-pipe having a stop-cock p4. ABy this arrangement upon openino' the stop -cock p4 and the cock p2 of one o the delivery-pipes p', as shown in Fig. 3, the oil from both cylinders is continuously delivered to the same part through one of the delivery-pipes, or, if desired, the lubricant'may be delivered alternately to different parts by closing the stop cock of the connecting-pipe p3 and opening the cocks of both delivery-pipes p.

The operation of the apparatus is as follows: The arm H2 of the oscillating disk H being connected with a reciprocating meinwhich joins the ber of the machine to be lubricated, rotary motion in one direction is imparted to the main shaft F by theI ratchet device'hcreinbefore described. Assuming the parts to occupy the positions shown in Fig. 3, the piston of the left-hand cylinder B has just completed its forcing stroke and the piston of the right-hand cylinder B has just completed its suction-stroke, filling the latter with oil. The outlet-valve o of the left-hand cylinder and the inlet-valve Z of the right-hand cylinder have been allowed to close by their opening-rods n o2 clearing the abrupt ends of the cams n o3, While the' inlet-valve of the left -hand cylinder. andthe outlet-valve of the right-hand one are about to be opened byv said cams. During the next suctionstroke of the left-hand piston and the corresponding forcing stroke of the right-hand .piston the right outlet-valve o is opened by the cam o3 and the oil is expelled from the right-hand cylinder into and through the outlet-chamber J thereof and thence through the connecting-pipe p3 and the left-hand delivery-pipe p', assuming the stop-cocks of these pipes to be in the osition shown in Fig. 3. At the same time tliie left inlet-valve Z is opened by the cam n and another charge of oil is drawn into the left-hand cylinder in front of its receding piston. When the pistons reach the opposite extremity of their stroke, they are moved in the reverse direction by the action of the rotary eccentric E and the yoke D, causiner the oil to be expelled from the left-hand cylinder and its outletchamber directly into the corresponding delivery-pipe p and another charge to be simul- ICO taneousl drawn into or supplied to the righthand cy inder. In this manner the oil is alternately expelled from the cylinders, the one beginning to deliver the same to the part to be lubricated immediately after the other becomes empty and continuing the feeding o eration until its contents are expelled, W en the other cylinder repeats the operation, and so on, as long as the lubricator is actuated and its reservoir kept supplied with oil.4 As the tWo pistons are positively and automatically reversed at the end of each stroke, the action of the alternately-operating pum s is Wholly automatic, and they together e ect a practically continuous feed of oil to the part to be lubricated when their outlet'- chambers are both connected to a common deliverypipe, scribed. No'interruptions of the feed can therefore take place, such as are liable to occur through neglect or reversal or alternate action of the pu nip-cylinders must be effected by hand.

The cams n o3 and thrust-rods n o2 constitute positive opening means for the inlet and outlet valves, and the closing-s rings Z2 o of the valves can therefore be ma e stiffer or of otherwise, where the` IIC as hereinbefore de- Y greater resistance than is possible where the valves are opened by atmospheric pressure, thus insuring a tight closure of the valves, preventingl leakage past the same, and increasing t e eHiciency of the lubricator.

While but a single pair of pump-cylinders and pistons is herein vsho'wn and described, the same can obviously be duplicated or multiplied, according to the number of different parts to be oiled by the same lubricator.

My improved ylubricator is especially -desirable for oiling the steam-cylinders and other arts of locomotives, but may be used for ubricating various other machines.

Upon removing the screw-plugs in the rear ends of the -valve-chambers the valves are accessible for repairing or removing' them, and their seats can be reground, if necessary. By making the rods a o2 separate from the valves the latter can be removed 4from their chambers without disturbing the packing or stuffing-boxes of the same.

I claim as my invention- 1. In a lubricator, lthe combination of a cylinder containing a piston and having inlet and outlet chambers, -valves arranged in said chambers and controlling the passages between the same and the cylinder, springs for closing said valves, and positive opening means for the valves constructed to operate the same alternately, substantially as set forth.

2. In a lubricator, the combination of a cylinder containing a piston and having inlet and outlet chambers connected therewith, valves arranged in said chambers andv controlling the passages between the same and the cylinder, springs for closing said valves, and rotary cams arranged to alternately open said valves, substantially as set forth.

3. In a lubricator, the combination of a cylinder containing a piston and having inlet and outlet chambers conl'iected.therewith, valves arranged in said chambers and controlling thc passages'between the same and the cylinder, springs vfor closing said valves, a rotary shaft extending across the cylinder, cams mounted on said shaft, and thrust-rods interposed between said cams and said valves, substantially as set forth.

4. ln a lubrieator, the combination o f a cylinder containing a piston and having inlet and outlet chambers vconnected therewith, and each provided in its rear end witharemovableplug, valves 'arranged in said chambers and controlling the passages between the same and the cylinder,` springs for closing said valves, and rotary cams arranged to alternately open the valves, substantially as set forth.

' 5. In a lubricator, the combinationof a pair of o posing cylinders each provided with an in et andD an outlet chamber and inlet and outlet ports connecting each cylinder with its corresponding chambers, check- Valves arranged in said chambers and controlling said inlet and outlet ports, pistons arranged in the cylinders, and an actuatingshaft arranged between the cylinders and carrying an eccentric which reciprocates saidl pistons and cams which operate said valves, substantially as set forth.

6. In a lubricator, the combination of 'a pair of opposing cylinders each provided on opposite sides with an inlet and an outlet chamber, inlet and outlet ports connecting each cylinder with its corresponding chambers, check-valves arranged in said chambers andcontrolling said inlet and outlet ports, springs for closing said valves, pistons arranged in said cylinders, and an actuatingshaft arranged between the cylinders and carrying an eccentric which reciprocates said pistons and cams which open said valves,

Asubstantially as set forth.

7. ln a lubricator, the combination of a pair of opposing cylinders each provided on opposite sides with an inlet and an outlet chamber, corresponding chambers of the cylind ers being arranged opposite or in line with each other, inlet and outlet ports connecting each cylinder with its corresponding chambers, check-valves arranged in said chambers and controlling said ports, springs for closing said valves, a shaft arranged transversely between said cylinders and provided in line with said inlet and outlet chambers with oppositely arranged cams, the one.

adapted to open the inlet-valves alternately and the other to open the Aoutlet-valves alternately, pistons arranged in said cylinders and means for actuating the pistons, subst antially as setforth. i

8. ln a lubrieator, the combinationol a. pair of opposing cylinders each provided on opposite sides-with an inlet and an outlet chamber, inlet and outlet-ports connecting each cylinder with its corresponding chambers, cheek-valves arranged in Asaid chambers and controlling said inletand outlet ports, springs for closing said valves, plstons arranged in said cylinders, a yoke connecting the pistons, an actuating-shaft arranged transverselybetween the cylinders and ca rrying an eccentric which reciprocates said yoke, oppositely-arranged cams mounted 011 said shaft in line with the check-valves of said inlet and outlet chambers, respectively, an'd thrust-rods interposed betweenv said cams and said check-valves, substantially as set forth. a

Witness my hand this 16th day of June, 1905.

ERNEST DIETZ.

Witnesses:

C. F. GEYER, E. M. GRAHAM.

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